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Phytophthora root rot is the most common soil borne disease causing plant death in native cut flower production. It is also a pathogen of exotic cutflower crops such as rose, lily, carnation, proteas and gerbera. The fungus, Phytophthora cinnamomi, the cause of jarrah dieback is the pathogen that first comes to mind when Phytophthora is mentioned. This has one of the widest host ranges of all Phytophthora species, particularly amongst native Australia species. P.nicotianae also has a wide host range, infecting a wide range of exotic, as well as Australian native flower crops. There are also a number of other species of Phytophthora that can infect native plants. Some of these are important soil borne pathogens infecting the root collar and main roots. There are also some species that infect the aerial parts of the plant such as leaves, flowers and fruit.
Number of Pages
Fungicides, Plant diseases, Cut flowers, Symptoms, Banksia, Plant disease control, Control methods, Biological control, Chemical control, Phytophthora, Hosts, Proteas, Life cycle, Western Australia
Plant Sciences | Soil Science
Department of Agriculture and Food, Western Australia. (2006), Phytophthora diseases of cutflower crops. Department of Primary Industries and Regional Development, Western Australia, Perth. Bulletin 4682.
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